Machine for drilling stone



(No Model.)

S. JONES.

MACHINE PoR DRILLING STONE.

No. 341,013. Patented May 4, 1886.

l @Moen/Coz,

@Vita/Lemos.

Pham-uxhograpmr. washington. D. c.

UNITED STATES PATENT OEEICEo SAMUEL JONES, OF WHAT CREER, IOVA.

MACHINE FOR DRILLING STONE.

STPECIFICATIONformng part of Letters Patent No. 341,013. dated May 4:, 1886.

Application filed February 3, 1886. Serial No. 190,698. (No mrdel.)

To all whom it 11mg/ concern:

Be it known that I, SAMUEL JONES, a citibolts cZ c3, that hold in position arms D, that su pport the box E of the auger-holding shaft zen of the United States, residing at What E. This box is in two parts, e e', from one of Cheer, in the county of Keokuk and State of Iowa, have invented a new and useful Improvement in Drilling Machines, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to improvements in a combined coal-mining machine, grip, and boxing-frame; and the novelty consists in the construction, arrangement, and combination of the several elements comprised therein, substantially as hereinafter described, and specifically pointed out in the claims.

In the drawings, which form a part of this speciiication, Figure 1 represents a side ele- Vation of a mining -grip embodying my improvement,and supporting a drilling-machine. Fig. 2 is a top plan view thereof, the drillingmachine being removed therefrom. Fig. 3 is a sectional view taken on the line x of Fig. 2, and shows a drilling machine in position thereon. Figs. i and 5 represent detail views vof parts of the mechanism comprised in -my improvement.

Referring to the drawings, in which similar letters of reference denote similar parts, A designates the grip consisting of a bar of metal, a, one end, a', of which is bent backward upon itself and provided upon its upper surface with a recess, a2, wherein is pivoted a pawl or dog, a3, normally held in the position shown in Fig. 8 by a spring, a4, interposed between said dog and the lower surface of the recess a2. rllhe outer end of the bar a is provided with lugs b, between which is pivoted one of a pair of lugs, b', formed upon one end of a short block or bar, B, having a slot,- b2, formed therein, that receives the pivotal bolt c of the drilling-machine C, held and supported upon and by the block or bar B.

C designates the drilling-machine having a casting, O, provided at its opposite ends with upwardly-projecting lugs c', and at its middle with an aperture, c, through which a bolt, c, passes to and through the slot b2, as hereinbefore described. l preferably provide the bolt c with a square shank, whereby the casting C is held against turning upon the block or bar B. The lugs c of the casting C are apertured near their side edges to receive which, the lower, e, project trunnions c2, that arejournaled in apertures formed in the upper ends of the arms D. The lower section, e, of the box E is provided upon its upper surface, near the side edges thereof, with apertured lugs e, that take into recesses e, formed in the sides of the upper section of said box. The part-s of said box at the sides of the recess are apertured to receive bolts that secure the parts e e of the box together. Each of the parts e e of the box E is provided for a portion of its length with female screwthreads, that engage corresponding male threads formed upon the auger-holding shaft E', and also at or near each end with annular grooves e5, that receive a collar, f, secured to the inner end of the hub of a bevel spurgear wheel F, loosely mounted upon the shaft E', whereby said spur-wheel is held in proper posit-ion. The wheel F is provided with a key, f', that takes into a groove, f", formed in one side of the shaft W, from end to end thereof, whereby rotary motion isimparted to said shaft by the rotation of said wheel, as will be readily understood.

G designates a bevel gear-pinion that is loosely mounted upon one of the trunnions c2 of the box E, and held in position by a pin, g, that passes through an aperture, g/, formed in said trunnion, as shown. The pinion G- engages and imparts motion to the spur-wheel F, and is provided upon its outer face with loops g", placed at opposite sides of its middle, that receives theiiattened shank hof an adj ustable handle, H. The shank his provided upon one side with a series of detents, h, that partially surrounds the trunnion upon which the pinion is mounted, and is thus held in proper position and against displacement from said pinion, and at the same time affords ready adjustment as regards differentdesired lengths of crank-arm. Y

In operation, the enlarged inner end of the grip is driven into an aperture formed in the coal, for which purpose the backward bend of the grip-bar is formed, its end forming a suitable place to receive blows from a sledge or ham mer, and said grip is securely held against displacement by the dog a3, which effectually ICO prevents outward movement of said grip, as will be readily understood.

The operation of the drilling-machine requires no description, inasmuch as it is similar to machines well known to the art.

Modifications in detail of construction may be made in my improvement without departing from the spirit or sacriiicing the advantages thereof.

1. In a coal-drilling machine, agrip bar, A, having one end bent upon itself and provided with a recess, and a spring-actuated pivoted dog fitted in the recess and normally projected at one end beyond the same, substantially as described.

2. In a coal-mining machine, a grip-bar, A, having its forward end enlarged, and provided with a pivoted dog and a spring for bearing against the same, in combination with a bearing block or bar, B, pivoted to the said gripbar and carrying the drilling machine, subslantially as described.

3. In a coal-mining machine, the combination of a grip-bar, A, having an enlarged front end and a pivoted dog, a bearing-bar, B, provided with a slot, b, and the lugs b', pivoted to similar lugs b of the gripbar, and a drilling-machine adjuslably mounted on the slotted end ofthe bar B, substantially as described.

4. In a coaldrilling machine, a grip bar, A, carrying the drilling-machina and having its forward end bent or doubled upon itself to form a shoulder, the blows of a sledge ham- Iner being received upon the shoulder to force the front end of the gripbar into the wall, as Set forth.

5. In a coal-drilling machine, a grip-bar having two sections pivotally connected together, the free end of one section of the bar being bentor doubled upon itself to form a shoulder, and the other section being movable laterally out of the line of the other bar or section and carrying the drilling-machine, substantially as described.

6. In a drilling-machine, a frame carrying an augershaft and a pinion, in combination with a gear-wheel journaled on a trunnion of the frame and having a lug partially inclosingthe trunnion, and the loops g, arranged at an angle to each other on the outer face of the gear-wheel and on opposite sides of the lug thereof, and an adjustable handle, H, fitted in the inclined loops and having a series of detents, h, in one of its edges, one of which fits SAMUEL JONES.

Vitnesses:

J. C. BEEM, C. W. I-IARBiRN. 

